“…Coronary artery disease (CAD), the major cause of death in developed countries with a rapidly climbing prevalence in developing countries, results in an estimated 56 million deaths worldwide every year (Khera & Kathiresan, 2017; Watkins & Farrall, 2006). Most of the CAD patients not only suffer from physical discomfort but also present with huge psychological pressure (Fakhr-Movahedi, Soleimani, Ghazvininejad, Maher, & Ghorbani, 2015; Gu, Zhou, Zhang, & Cui, 2016; Pelletier et al, 2015). According to several previous studies, most patients who suffer from CAD are tormented in different degrees of psychological illnesses, including anxiety, depression, and epilepsy, among which anxiety and depression are the most frequent psychological problems which present with high incidences ranging from 27.8% to 77.1% and 24.8% to 50.0%, respectively, in CAD patients, nearly twice or thrice higher compared with healthy people (Najafipour et al, 2016; van Dijk et al, 2016).…”